Gage-lever mechanism for plows.



J. J. TAIT. GAGE LEVER MEGHANISM FOR FLOWS. APPLIOATION FILED SEPT. 7,1909.

961,435 Patented June 7, 1910.

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JAMES J OHNSTONE TAIT, OF MEOTA, SASKATCHEWAN, CANADA.

GAGE-LEVER MECHANISM FOR PLOWS.

Specification of Letters Patent.

Patented June *7, 1910.

Application led September 7, 1909. Serial No. 516,623.

To all whom t may concern:

Be it known that I, JAMES JoHNsToNn TAIT, a subject of the King of GreatBritain, residing at Meota, in the Province of Saskatchewan, Canada,have invented certain new and useful Improvements 'in Gage-LeverMechanism for Plows, of which the following is a specification.

My invention relates to improvements in gage-lever mechanism for plows,and the object of my invention is to provide a device of the classdescribed by means of'which I can regulate the depth it is desired toplow, without stopping the team, and the construction of my inventionwill be hereinafter more particularly described, and the parts I claimas new will be pointed out in the claim forming part of thisspecification.

The drawing shows a side elevation of an ordinary wooden framebrush-plow provided with my gage-lever mechanism.

A is the beam of the plow and c the handles thereof. Suitably secured tothe beam A near its rear end is a quadrant B to which is pivoted a leverC. Pivoted by the bolt D to the lever C is a thrust bar E.

F is the gage-wheel mounted between a pair of depending arms Gr pivotedby the bolt H to the beam A.

I is the aXle on which rotates the gage-y wheel F. Mounted on each endof the axle I are a pair of link bars J which are pivoted by the bolt Kto the forward end of the thrust bar E. Also pivoted on each side of thebeam A by the bolt L are link-bars M through the upper ends of whichpass the bolt K. As before mentioned, there are a pair of arms Gr, apair of link bars J, and a pair of'link-bars M, on each side of the beamA, but in the drawing only one set of these different pairs of arms andbars have been illustrated, as the illustration of the other set of armsand bars is not necessary for the full comprehension of this invention.

N is a coiled spring connecting 'the linkbars M with the forward end ofthe beam A. One end of the coiled spring N passes over the bar O whichcouples the pairs of link bars M together between their ends. The beam Ais of course provided with any suitable clevis I.

The position of the parts shown in the drawing is such as to permit theplow to turn the shallowest possible furrow. When the lever C is thrownin the direction indicated by arrow, the gage wheel F and arms G are,through the connections before described, thrown backward around thebolt I-I, thereby raising the gage-wheel F farther from the ground andpermitting a deeper furrow to be turned by the plow.

As is well known, the shape of the plowshare enables the plow to be runinto the ground, and as the spring N exerts pressure against thelink-bars M and through the link-bars J against the gage-wheel F, itwill be understood that when the operator desires to raise the plowshareup so as to turn a shallower furrow, this spring, through the parts justdescribed adds additional power to the power generated by the operatorAthrough the lever C, thereby enabling the operator to easily positionthe gage-wheel F, that is, throw it around its bolt I-I nearer to theground, so that the furrow to be turned will be of the desired depth.

By means of the bolt D the thrust-bar E is pivoted to the lever C, andthis construction prevents any play between this thrust-bar and saidlever. There is no looseness in any of the pivoted joints, and by makingmy gage-lever mechanismstiff, the gage-wheel F will not have unnecessaryplay.

By means of my invention the operator can regulate his plow so as toturn a deep or a shallow furrow without the necessity of having to stopand adjust any of the parts by means of a wrench or equivalent device.

My invention is particularly useful in connection with abrush plow,because in plowing the prairie, when one comes to scrub land the plowcan be adjusted at once so as to turn a deeper furrow in the scrub landt-han is necessary to be turned in the clean prairie.

While my invention is more particularly designed for use in connectionwith brush plows, still I do not confine myself to essentially using thesame with this class of plow.

What I claim as my invention is:

In a plow, the combination with the beam thereof, of a gage-levermechanism comprising a depending arm pivoted near the forward end ofsaid beam; a gage-wheel journaled in the lower end of said dependingarm; a link-bar pivoted to said depending arm; a thrust-bar to which theupper end of said link-bar is pivoted; a second link-bar pivoted to saidbeam and to which the firstmentioned link-bar and said thrust-bar are Inteatgruonyfwherwf il have nlxed my slgnature 1n presence of tWoWitnesses. g

,JAMES .wi-INSTQNE TAIT. l Witnesses pvoted; L quadrant carried by.aadbemd and placed near its rear end; a lever ,asse-V. Cated with saidquadrant and to which, Said thrust-bar is connected, and a coled spring'5 connected with said beammear its vlunt end, g and also connected withthe link-bar 11owhich said v.th,Inlflvsxtrbgur is pvoted. l

